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A double-shot inverse-phase color fringe projection profilometry is proposed to measure 3D shape information by using two-step phase shifting. Each of these two patterns encoded with two sinusoidal patterns and one uniform intensity pattern is projected by a digital projection and recorded by a color CCD camera. Firstly, the captured color fringe patterns are separated into its RGB components and...
Monitoring the spontaneous kicking patterns of infants can give insight into their development. A computer vision based method for estimating the pose of an infant's leg from range images is presented in this paper. After some manual inputs for initialization, the range data associated with the infant is extracted. The method uses Robust Point Set Registration (RPSR) to fit an articulated model to...
The paper describes a computer vision method for estimating the clinical gait metrics of walking patients in unconstrained environments. The method employs background subtraction to produce a silhouette of the subject and a randomized decision forest to detect their feet. Given the feet detections, the stride and step length, cadence, and walking speed are estimated. Validation of the system is presented...
The car body structure and vision limitations of the rear view mirror may lead to inner wheel difference and blind spots, which results in traffic accidents. To solve this problem, many automakers develop the Around View Monitoring (AVM) actively. The AVM system provides the information around the car for drivers with videos. This paper is based on the 2D AMV and further develops the 3D AVM, which...
Traffic accidents make car safety receive most attention in recent years. With the progress of image processing technology, the automotive safety equipment sets cameras on cars and conducts image processing with the images captured by the cameras, which provides drivers more traffic information. In the image-based active driving safety equipment, the pedestrian detection technology is important. Most...
Low cost depth sensors could potentially allow for home-based care and rehabilitation using virtual systems. Currently, no publicly available and peer-reviewed assessment has been made on the accuracy of joint position data determined by the Microsoft KinectTM for assessment of upper extremity movements. We devised and validated clinically-based angle classifications for random arm movements in 3D-space,...
In order to construct an integrated sounding rocket experimental platform and to record the status of the sounding rocket as well as onboard payloads, an onboard video processing system based on the wavelet transform compression algorithm is designed in this paper. Specifically, the system utilizes a compression algorithm based on the bi-orthogonal (9, 7) discrete wavelet transform and implements...
In allusion to the current traffic monitoring, driver skill examination and other requirements, the algorithm of vehicles trajectory extraction based on video image sequences is proposed. First, based on researching the characteristic of road images, this algorithm has used multi-objective optimization technique to improve feature point matching mechanism based on Euclidean distance, which used after...
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